Apparatus for making bunch-yarn



Nov. 2, 1937. s WALSH 2,097,543

APPARATUS FOR MAKING BUNCH YARN Filed March 27, 1937 2 Sheets-Sheet l INVENTOR.

A T TORNEYS.

Nov. 2, 1937. s. R. WALSH- APPARATUS FOR MAKING BUNCH'YARN 2 Sheets-Sheet 2 Filed March 27, 1937 LTL? INVEN TOR.

Jamaal 12.94)? W Zz/sk MWW Patented Nov. 2, 1937 mars is APPARATUS FOR MAKING BUNCH YARN Samuel Rushton Walsh, "Valley Falls, .R.::.I., as-

signor to H & B American Machine Company, a corporation of Maine Application March 2'7, 1937, Serial No. 1335327 19 Claims.

This invention relates to twisting apparatus of the type employed for producing fancy yarns having bunches of differently .colored threads relation thereon. and will maintain such spacing of the strands for forming bunches on the core ,yarn at definitely spaced intervals.

.Another object of the invention is to provide a guide device of the above character which is devoid of adjustable guiding means for the bunch forming strands yet.is adapted to permit the independent and selective positioning of the latter by the operator into separate pre-determined guiding positions wherebythe distances between the bunches formed on the main core strand may be varied asdesired.

Another object of the invention is to provide a yarn guide construction which will avoid the use .of supporting and guiding members which act on the moving' bunch-forming yarns to cause them to be deflected obliquely to their normal direction of feeding movement after leaving their respective feed rolls in being delivered at substantially right angles to the main yarn .on which the bunches are formed.

Anotherobject of the invention is the provision of a simple and inexpensive yarn guide construction which is capable of being readily applied to any existing bunch-forming twisting apparatus.

With these and other objects in view, the in- I vention consists of certain novel features of construction, as will be morefully described, and particular ly pointed out in the appended claims.

In the accompanying drawings:

Fig. 1 is a fragmentary front view looking at the head or driving end of a twistingmachine and embodying one form-0f my invention;

Fig. 2 is a fragmentary side elevational view taken on the line 2-2 of Fig. 1;

Fig. 3 is an enlarged perspective View diagrammatically illustrating the relative operative relationship of the various parts of the twisting machine shown in Fig. 1 in connection with my'nove], guide device for forming bunch yarn;

Fig. 4 is a perspective viewmn enlarged scale,

according to the present invention;

Fig. v5 is .a perspective view of a modified form of yarnguide construction; embodying --my invention;

Fig. 6 is a 'perspective view of another "modified. construction of ;a yarn guiding device'embodying my inventiomand I Fig. l'is a representation of affragment of-one variety of bunchyarn which' may "be produced by theme of a yarnguide construction embodying J the :present .invention. r In the manufacture of bunch-or novelty yarn in which oneor more strands of differently colored yarnsin addition tdbeing twistedonthe main .core .yarn are wound thereon atpredetermined intervals to formbunches or nubs so as to give a fancy appearance thereto, it is custom- .ary to produce this particular type of yarn by means of twisting apparatus involving the use of two sets of feed rolls for deliveringthe yarns, ,in which one set :of rolls is intermittently operated .to intermittently deliver the main core yarn to the receiving. bobbin while the other set of delivery rolls rotates. continuously to feed the bunchforming yarns to the. core yarn and be wound thereon during thelintervals, that the latter remains stationary .to form ;the "bunches. Her'eto'fore, various yarn guiding constructions-have been employed over which the Various strands of material are passeoLand among such former constructions is one in which the .core yarn .,is,run through a wire guide eye or pigtail and the continuously fed. bunch-forming yarns are delivered obliquely onto the core yarn at apoint immediately belowthe guide eye for the latter, which often results in the yarns becoming badly tan:- gled. Inanother prior construction a series of wide horizontalv guide bars are utiliz'ed,one bar for each ,strandof yarn or thread and arranged of one form of yarn guiding deviceconstructed V .in vertically spaced relation .and extending ,sub- 7 stantially the entire length of the machine. .However, this latter scheme is objectionablesince bythis arrangement the bars of the framework are arranged very. close together and when thus placed oppositeand in front of the delivery or feed rolls for the strands of yarn so fill up the working space as to interfere with the efficient operation of the machine and to render it difficult for the operators to have easy access tothe delivery rolls and associated mechanism of the machine; an-d inorder "to overcome these prior difiiculties l fhavefound it to be of advantage ;'to provide a yarn guiding device for :1 machines of this type wherein the main core yarn and a plurality of bunch-forming yarns are guided separately andindependently to be delivered'at predetermined points on the same side of the core 5 yarn where the bunches are simultaneously formed by winding the bunch forming yarns on the core yarn at each stoppage of the latter, with the yarns being twisted together'between bunches, in which the bunches are formed without the 10 bunch forming yarns being bent, or caused to run laterally of or be deflected from their normal tan-1 gential direction of travel after leaving the bunch yarn feed rolls during their continuous delivery to and simultaneous winding on them'ain core strand; and in order to attain these advantageous results I have further found it to be of advantage to provide a plurality of {narrow upright yarn guiding devices adapted to be individually arranged in front of each set of delivery rolls for ;the bunch :forming yarns or thread for guiding and directing-the same to the core yarn and atthe same time locating the points at which the bunches are being wound; and for suchpurposes I have provided in one or more of thelOngitudinaI 25 side faces a row of inwardly extendingtransver'se 'slots for separately receiving the bunch-forming yarnsyand in order-to guide the main strand of core yarn I further provide guidemeans located at the top end of my yarn guide device and preferably in the nature of a depression which carries -a smoothsurface over which the core yarnpasses and is supported thereby; .and the following is a detailed description of several embodiments of .this invention, illustrating the preferred means by which theseadvantageous' results may be ac- ,complished: I

With-reference to the drawings, l0 designates V a portionof the frame of alconventional twisting machine of the type used for making novelty yarn and as shown is provided with the usual spindles each carrying ayarn receiving bobbin l2 andbeingmounted and arranged for rotation on a stationary rail l3 which extends longitudinally of the machine. -Disposed above the rail j|3 andextending parallel therewith is the usual vertically reciprocable ring rail M on which is Icarrieda row of-.rings l5 provided with suitable travelers l6 and through-which rings .the upper portionslof the spindles I and bobbinsf 2 roject.

'50 A band ortape passes around the pulleys I8 which are fast on the spindles I and thus serves toimpart rotation thereto from the usual driving cylinder I9, as isof well-known construction in the art. I I

Mounted on thetop end of the frame 10 is the usual creel board whose topsurface supports the end standards 2|. for supporting the custom- ;ary framework of bars and skewers of the stand- -ard creel and arranged for. holding therows of -supply bobbins 22 and 23 respectively, from which the core and thebunch-forming yarns are fed.

' v :The usual roller beam 25 of the machine frame isprovidedwith a thread board 26 for each of thespindles H and having a pigtail thread guide 1 eye 21 which is mounted above and substantially in alignment with the vertical axis of the spindle. Thethread boards "23 are suitablyhinged to the roller beam 25 topermit'the thread boardto be 7' tipped back when desired.

Mounted on the top portion of the roller beam -25'are' the customary roller stands 30' in which" are journaled a plurality of sets of feed rolls for the core and the bunoh-forming yarns,,respec-' tively. As -shown in Fig. 2, two independent sets it passes between the rolls 33 and 34 and around videda yarn guiding device for enabling the for: mationof a wide variety of patterns, of bunch of feed rolls are illustrated in which the front feed rolls for delivering the bunch-forming yarns B from the supply bobbins 23 are indicated at 3| and 32, while the rear rolls 33 and 34 act to feed the main core yarn C from the supply bobbins 5 22. The rolls. 3| and 32 for the bunch-forming yarns B are continuously driven, and the set of 7 rolls 33 and 34' are operatedintermittently to produce the bunch yarn by twisting, during the interval of rest of the core yarn C, of the bunch- 10 forming yarns B around the stopped strand of the core yarn. The head end frame support 35 and the box-like casing 36 contain the usualdriving mechanism of shafts,'clutches and gearing (not 'shown) for continuously operating the rolls 3| l5 and 32 for feeding the bunch-forming yarns, and for-causing the intermittent rotation of the rear rolls 33 and 34 to feed and stop the core yarn at desired intervals for twisting and winding .the bunches or nubsthereon, such mecha- 20 nism being of well-known construction and one preferablycapable of control and of different speeds foryarying the duration of the rest periods -of the co're yarn. The rolls 3|, 32, 33 and 34 respectively have their directions of rotation. as

indicated by the arrows in Figs. 2 and 3 eithe drawings.

Guide eyes or pigtails 31, 38 and 39 respectively,

located behindthe jvarious sets of rolls, .as shown in Figs. 2, and 3, serve for directing thecore'and 30 bunch-forming yarns to the respective sets of feed or delivery rolls. -The bunch forming yarns 3 upon being unwound from the supply bobbins .23 areled through the guide eye 39, then pass forwardly over an d'around. the'top roll 3| and Ito be wound as bunches on the main core yarn.

The main core yarn'C as it is removed from the supply bobbin 22 passes through the guide eye .38, thence forwardly over and around the top roll '33, and after one or two wrappings thereon,

and under the lower roll34 from which it leaves in a direction tangent to the, latter and is led upwardly; and forwardly to pass over the usual horizontallbar and thence downwardly over and in front of the guide device, to be described,

where the bunch-forming yarns are wound on the core yarn during its longitudinalmovement with respect to the guide. 7 a

In accordance with my invention I have proyarn to be eas'ilyand readily made in which my guide construction comprises a slender body member 49' made preferably of a long narrow piece of 7 thin material, such as a strip of sheet metal or a stamping. If desired, the member 4!! may comprise a strip ofa molded composition, such 'as for example, vulcanized rubber, molded or pressed resinoid products, such as shaped bodies formed partly or. entirely of a phenolic resin, or a urea resin, orof the Glyptal type of resins or other common--resinoid materials which are well- 'known'as'molding materials and capable of acquiring a smooth textureand of beingmatured'75 and set to a-final hard solid condition under-conditions'of heat and pressure.

As shown in Figsgl, 2 and 3 the-yarn guiding device' lfl is illustrated in its normal operating position in connection with a portion of a twisting machine in which I'haveshown .the guide device as being mounted thereon in an upright position and secured to a horizontalbar 4| by means of screws 42 which pass through suitable holes 43 formed in the base portion of the guide body member as.

In order toguide the main strand or core yarn on which the bunches or nubs are formed, I have provided on the top end of the guide'member 40, a notch 45 which extends transversely across the end faceof the guide body and at the opposite end therecfto that near which the holes 43 are formed. Thenotch 45 may be of any desired shape,- as by being made either of partially rounded or of V-shapeform, andit may also-be located .either coincident with or offset with respect to the longitudinal'axis of the guide body and at right angles thereto, the depth of the notch, of course, being suiiicient to receive and confine the moving strand of core yarn so that the sides of the notch properly guide the same inits longitudinal movement during the intermittent rotation of the core yarn delivery or feed rolls 33-and 34 respectively.

In order to separately guide the individual strands of bunch-forming yarns and to permit the spacing between the bunches or nubs to be changed or altered at will, I have shown in Fig. 4,

' one specific embodiment of my invention-wherein one of the longitudinal sidefaces of the guide body member 46 is providedwith a row of elongated openings or narrow slots 46 for individually guiding the bunch-forming yarns, the slots 46 being preferably equally spaced from one another and extending transversely inwardly from the longitudinal edge 41 of the guide 40 and to a depth wherein the'bottoms of the slots will extend beyond an imaginary longitudinal line which may be drawn along the 'front face of the guide body member 49 and passing through t he notch 45.

As thus formed, the openings 45 interrupt the continuity of the edge 41 to form a row of spaced teeth-48 along-a substantial portion thereof. The openings or slots 46 may be arranged parallel with respect toeach other or their longitudinal axes may be parallel and the Opposite side. walls'of the teeth 43 tapered, if desired. However, each of the slotted openings 46 is ,formed of suflicient width for readily receiving an individual strand of the bunch-forming yarns, and one on'each slot selected, so as to guide the same while maintaining the separate strands of yarn spaced at predetermined distances, depending on the selected slots, for forming the bunches on the core yarn at predetermined and definite intervals. I

In Fig.5, I have shown a modified form of my invention in which the guide comprises a body member 58 provided with a notch 5| for the core yarn in its'top end, one of the longitudinal sides of the member 59 being formed with a row of diagonally extending slots 52 for guiding the bunch-forming yarns. The slots 52 are of generally parallel form and extend in a downward direction and toward the direction of travel of the core yarn to meet therewith at an angle. The bottoms of the slots 52 are in alignment and preferably offset to oneside of a vertical line passing through the notch 5|. H01es55 are provided at the base of the body50 near the opposite clinedlarrangement of the slots 52 serves-to maintain the strands of 'bunchforming-yarn in position and thus minimize any accidental loss therefrom through sidewise movement.

' In Big. 6 I'thave shown-another modification of my inventionin which a guide? body '60. is pro- .vided with a plurality of oppositely :arranged rows of slots BI and 62 disposed in staggered relation atthe opposite longitudinal edge portions tions, as above described, the strands of the bunch-forming and the core yarns are delivered by their'respective' feed rolls 3|, 32, 33 and 34 to the'guide deviee'40,50 or .160, as the case maybe, the maincore yarn C after it leaves its particular feed rolls, first passes upwardly. across and over the top forward edge of the usual horizontal bar 55 whichis positioned abovethe yarn guide. The core yarn then runs downwardly through the notch formed in the topof theguide' device, then passes longitudinally downwardly across the front'face of the guide 'body member and through the guide eye o'fthe pigtail '21 to the traveler l6, and" thence to the bobbin l2 upon which it is wound. The bunch-forming yarns ZB leave their respective feed rollsalong tangential lines'and are led in a straight line 'from the:

undersideof the latter to the guide device'wh'ere they are inserted individually in one or more selected spaced slots 46, 52, 6| or 62, depending upon which form of my guide construction is employed, and the slots serve to separately support and guide the bunch forming yarns when they are being wound on the core yarn to form the bunches. In order to control the "distance or interval of the spacing of the bunches formed on the core yarn, asdesired, one can-accomplish this .result by simply selecting the desired or proper slots on the guide 'body in which' the linear distance between the successive slots to be used corresponds to the desired spacing of the bunches to be formed on the composite or final bunched yarn. The revolutions of the t'ravele'r l5 act to-twist the core-and the bunch-forming yarn about the path of travel of the core yarn during simultaneous longitudinal movement of each,-and also in the course of which the bobbin operates to wind the bunch-forming yarns on the main core strand at each stoppage of the latter so as to form the desired bunches thereon. 7 As shown in Fig. 2 the guide 40, bars 4| and 55 may be supported at spacedpositionsby an L-,

shaped bracket 65, one arm of which is'slotted,

5 end thereof ifriomzthe-notch 55l5f01 mounting :the device. Iti willpzbe seen'athat the downwardly inas indicated at 6!, to receive a clamping bolt 62 and thus provide'fo'r adjustment of the guide 40 and the bar's-4| 'and 55- towards and from the front line of'-'feed rolls, and also align thecore yarn with reference'to the guideeye 21.

It will be apparent that in accordancev with this invention I have produced ayarnguiding device which is not only superior to the former constructions by reason of its simplicity but that it obviates the necessity of individually-adjustable guide elements for the bunchforming yarns, as heretofore characterized certain oftheprior devices, and in addition, it further avoids the unsightly framework previously utilized,'thus leavpended claims.

free from rows of bars which seriously interfere with the efiicient production of the work since they tend to obstruct the accessibility of the various parts ofthe mechanism tothe operator.

The foregoing description is directed solely towards the construction illustrated, but I desire it to be understoodvthatll'reserve the'privilege of "resorting to all the mechanical changes. to which the device is susceptible, the invention being defined and limited only by the terms of the ap- I claim:

'1. A yarn guide for twisting and like machines for making bunch yarn comprising a body having one edge slotted to provide a plurality of spaced openings disposed in a single row along said edge portion forfselectively receiving and separately guidingoneor more of the bunchforming yarns.

2. A yarn g'u'ide'for twisting and like machines formaking bunch yarn comprising a slender, elongated body having one of its longitudinal edges slotted to provide a plurality of spaced openings disposed along its length and extending transversely inwardlyitherefromior selectively receiving and separately guiding one or more of the bunch-forming yarns.

; 3. A yarn guide for twisting and like machines for makingbunch yarn comprisinga thin slender body having spaced teeth at one edge thereof to provide a plurality-of spaced openings along the :length of said body for r the bunch-forming yarns.

guiding one or more of 4. A yarn guide for twisting and like machines 7 for making bunch yarn comprising a thin slender body having spaced teeth on a longitudinally extending edge thereof to' provide a plurality of spaced openings along the length of said body for receivingand guiding one or more of the bunchforming yarns. V 7 t 5. A yarn guide for twisting and like machines for making bunch yarn comprising a thin slender body havingfspa'ced teeth-on a longitudinallye tending edge thereof toprovide a plurality of spaced openings along the length of said body and extending transversely inwardly from said edge for receiving and guiding one or more of the bunch-forming yarns. 7

6. A yarn guide for twisting and like machines for making bunch yarn comprising'a thin slender body having spaced substantially parallel teeth on a longitudinally extending edge thereof to provide arplurality of spaced elongated openings along the length of said body andextending transversely inwardly from said edge for receiving and guiding one or more of the bunch-forming yarns. r p

7. A yarn guide for twisting and like machines for making bunch yarn comprisinga thin slender body having spaced teeth on a longitudinally extending edge thereof to provide'a plurality of spaced openings along the length of said body for receiving and guiding one ormore of the bunchforming yarns, and means at one end of said body for guiding the main core yarn. V n v 8. A yarn guide for twisting and like machines r for making bunch yarn comprising a thin-slender body having spaced teeth on a longitudinally ex tendingfedge thereof to provide a plurality of spaced openings along the length of Said body for receiving and guiding one or more of the bunch- Vformingyarns, and a notch formed at one end of said body for guiding the main core yarn.

- 9. A yarn guide for twisting and like machines 2,097,543 ing the front portion of the machine clear and for making bunch yarn, comprising a long narrow body member adapted to be mounted in an up- ,wardly extending position, means at the top end 7 of said member for guiding the main core yarn,

and a plurality of spaced guide members extending transversely of said body member and 3 disposedonea-bove another at one edge thereof, said guide members being located below and at generally right angles to said top core yarn guide 'means for guidingone or more of the bunchforming yarns.

10. A yarn guide for twisting and like machines -for making bunch yarn, comprising a long narrow body member consisting of a thinstripof material-,which'is adapted to be mounted in an upwardly extending position means at the top end of. said body member for guiding the main core yarn, and a plurality of spaced guide members extending transversely of said body member and disposed one above another at one edge thereof, said'guide members being located below and at generally right angles to said top core-yam guide means for guiding a plurality of bunchforming yarns.

11. A yarn guide for twisting and like machines for making bunch yarn, comprising a long narrow body member consisting of a thin strip of materialwhich is adapted to be mounted in an upwardly extending position, means at the top, end of said'body member'io r guiding the main core yarn, and means on'one edge and extending transversely of said guide body member and located below and at generally right angles to said ,top core-yarn guide means for guiding a plurality of bunch-forming yarns.

e 12. A yarn guide for twisting and like machines for making bunch yarn, comprising a long narrow body member consisting of a thin strip of material which is adapted to be mounted in an upwardly extending position, means at the top end of said body member for guiding the main core yarn,and spaced means on one of the longitudinal edges and extending transversely of said guide body member and locate-d below and at generally right angles to said top core-yarn guide means {or guiding'a plurality of bunch-forming yarns;

13. .Ayarn guide for twisting and like ma chines for making bunchyarn, comprising a long narrow body member-consisting of a thin strip of material whichis adapted to be mounted in an upwardly extending position, a notch at the top end of saidfbodymember for guiding the main core yarn-,and means on oneedge and extending transversely of said body member and lo c ated below and at generally right angles to said guiding a pluraltop core-yarn guide means for ity of bunch-forming yarns. f

14 A yarn guide for twisting andrlike machinesfor making bunch yarn, comprising a long narrow body member consisting of a thin' strip of material which is adapted to be mounted in an upwardly extending position, a notch atthe top end of said body member for guiding the main core yarn, means on one edge and'extending transversely of said guide body member and located below and at generally right angles to said top core-yarn guide means for guiding a plurality of bunch-forming yarns, and means near the opposite end .of said bo dy to that carrying the notch formounting the: body in an upright position.

15. In a twisting or likei machine for use in making bunch'yarn and having a. receiving bobi bin forthe final bunch yarn and pairs of rolls for feeding each yarn, one pair of said rolls being arranged for feeding the core yarn intermittently to said bobbin and another pair of rolls which feed the bunch-forming yarns continuously to the core yarn, of a guide element for the core and bunch-forming yarns comprising a long narrow member adapted to be mounted with its longitudinal axis extending in an upright position, said guide element being disposed between the feed rolls for the bunch-forming yarns and said receiving bobbin for the final bunched yarn, the top end of said guide element being notched for guiding the main core yarn, and the body part of said member having a row of transversely extending teeth at one edge thereof, the openings between which selected teeth serve for guiding one or more of the individual bunch-forming yarns.

16. In a twisting or like machine for use in making bunch yarn and having a receiving bobbin for the final bunch yarn and pairs of rolls for feeding each yarn, one pair of said rolls being arranged for feeding the core yarn intermittently to said bobbin and another pair of rolls which feed the bunch-forming yarns continuously to the core yarn, of a guide element for the core and bunch-forming yarns, comprising a long narrow member adapted'to be disposed in an upright position between the feed rolls for the bunch-forming yarns and. said receiving bobbin for the final bunched yarn, one edge of said guide and guiding one or more of the bunch-formin yarns. 7 7

1'7.'A yarn guide for twisting and like machines for making bunch yarn comprising a member having one edge slotted diagonally inwardly therefrom to provide a plurality of spaced openings for selectively receiving and guiding one or more of the bunch-forming yarns.

18. A yarn guide for twisting and like machines for making bunch yarn comprising an elongated member having its opposite longitudinal edges transversely slotted to provide a plurality of groups of spaced openings along a portion of each of said edges of the member, the openings of said groups being adapted for selectively receiving and separately guiding one or more of the bunch-forming yarns.

19. A yarn guide for twisting and like machines for making bunch yarn comprising a body-member adapted to be mounted in an upstanding po-'v sition, said body having a plurality of spaced guide elements extending transversely thereof and disposed one above the other in a single row. when so mounted, to provide a plurality of spaced openings for receiving and guiding one or more of the bunch forming yarns.

SAMUEL RUSH'ION WALSH.

element being transversely slotted for receiving 

